| http://www.w3.org/ns/prov#value | - Aluminum is in that same group, but there???s quite a bit of difference between aluminum and the first element is lanthanum, and then there???s cerium and praseodymium, neodymium, and then there was an element missing from nature, promethium, which was made ??? about six percent of the elements at are produced by fission of uranium in the reactor is promethium.
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